I´ve made a list of the special walls. Maybe I´ve forgotten some Pokemon:
Blissey, Cresselia, Mantine, Regice, Shuckle, Milotic, Claydol, Suicune, Snorlax, Dusknoir, Togekiss, Dragonite, Roserade, Bastiodon, Bronzorg, Spiritomb, Gallade, Gardevoir, Probopass